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Updated: Dec 21, 2025

Rapid Repetition Rate Fluctuation Measurement of Soliton Crystals in a Microresonator
Published on: December 15, 2021
Heteronuclear soliton molecules in optical microresonators
Wenle Weng1, Romain Bouchand2, Erwan Lucas2,3,4
1Institute of Physics, Swiss Federal Institute of Technology Lausanne (EPFL), 1015, Lausanne, Switzerland. wenle.weng@epfl.ch.
Researchers discovered new "heteronuclear dissipative Kerr soliton molecules" in a Kerr microresonator. These molecules, composed of different solitons, offer insights into nonlinear dynamics and could advance metrology and spectroscopy.
Area of Science:
- Nonlinear Optics
- Quantum Optics
- Condensed Matter Physics
Background:
- Optical soliton molecules are bound states of solitons, crucial for understanding soliton interactions and nonlinear system dynamics.
- Previous observations span optical fibers and mode-locked lasers, highlighting their fundamental importance.
Purpose of the Study:
- To explore the multistability regime of a Kerr microresonator.
- To generate and characterize novel heteronuclear dissipative Kerr soliton molecules.
Main Methods:
- Utilized a Kerr microresonator operating in its multistability regime.
- Employed ultrafast electro-optical sampling for detailed analysis.
Main Results:
- Successfully generated and discovered heteronuclear dissipative Kerr soliton molecules.
- Demonstrated that these molecules, despite differing soliton properties (amplitude, duration, carrier frequency), exhibit tightly short-range binding.
- Observed the formation of coherent frequency combs with unique mode structures.
Conclusions:
- Heteronuclear dissipative Kerr soliton molecules provide new insights into soliton dynamics in complex nonlinear systems.
- The unique frequency combs generated may have significant applications in metrology and spectroscopy.
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